The Great Southern Endurance Run (GSER) is a premier trail running event set amidst the breathtaking yet formidable Victorian High Country of Australia. It offers a range of challenging distances, including 14km, 28km, 56km, 50 miles (solo and relay options), and the demanding 100-mile ultra-marathon. Runners navigate diverse and rugged alpine terrain, ancient snow gum forests, and pristine river valleys, often traversing sections of the iconic Australian Alps Walking Track. Known for its significant elevation changes and stunning vistas, GSER provides an unforgettable experience for both seasoned ultra-runners and those new to mountain trails, pushing participants through an epic journey from Mt Hotham Alpine Resort to Harrietville.
Race
100 miles
Race Date:
21 November, 2025
GSER 100-Mile in 2025 is crafted for runners ready to elevate their trail-running journey beyond the 50-mile or 100-kilometer mark, embracing the challenge of rugged terrain and the breathtaking grandeur of the mountains. This extraordinary course weaves through predominantly single-trail, with extensive sections along the legendary Australian Alps Walking Track. Completing this journey demands immense grit and determination, rewarding participants with a profound sense of achievement.
Weather based on historical averages.
FAQs
What is the GSER 100 Mile?
How long is the GSER 100 Mile?
Where does the GSER 100 Mile take place?
What is the elevation gain of the GSER 100 Mile?
How can I prepare for the GSER 100 Mile?
How do I choose the right training plan for the GSER 100 Mile?
GSER 100-Mile in 2025 is crafted for runners ready to elevate their trail-running journey beyond the 50-mile or 100-kilometer mark, embracing the challenge of rugged terrain and the breathtaking grandeur of the mountains. This extraordinary course weaves through predominantly single-trail, with extensive sections along the legendary Australian Alps Walking Track. Completing this journey demands immense grit and determination, rewarding participants with a profound sense of achievement.
The GSER 100 Mile is 174km long.
The GSER 100 Mile takes place in Harrietville, Victoria, Australia.
The GSER 100 Mile elevation gain is 7565 metres, which Runna classifies as a Hilly race.
The best way to train for the next race is to use a personalised training plan that takes into account your current running ability, schedule, and preferences.
This will help you steadily improve your running performance and get ready for the race without risking an injury.
Check out our training plans to find the best running program for your goals!
Which plan you choose will depend on your experience, schedule, objectives, and the date of the race.
Runna offers personalised training plans for every runner and every goal: Whether this is your first, 10th or 100th race, we'll help you get the most out of your training and smash your goals.
Check out our training plans to find the best running program for your goals!
What is the GSER 100 Mile?
GSER 100-Mile in 2025 is crafted for runners ready to elevate their trail-running journey beyond the 50-mile or 100-kilometer mark, embracing the challenge of rugged terrain and the breathtaking grandeur of the mountains. This extraordinary course weaves through predominantly single-trail, with extensive sections along the legendary Australian Alps Walking Track. Completing this journey demands immense grit and determination, rewarding participants with a profound sense of achievement.
How long is the GSER 100 Mile?
The GSER 100 Mile is 174km long.
Where does the GSER 100 Mile take place?
The GSER 100 Mile takes place in Harrietville, Victoria, Australia.
What is the elevation gain of the GSER 100 Mile?
The GSER 100 Mile elevation gain is 7565 metres, which Runna classifies as a Hilly race.
How can I prepare for the GSER 100 Mile?
The best way to train for the next race is to use a personalised training plan that takes into account your current running ability, schedule, and preferences.
This will help you steadily improve your running performance and get ready for the race without risking an injury.
Check out our training plans to find the best running program for your goals!
How do I choose the right training plan for the GSER 100 Mile?
Which plan you choose will depend on your experience, schedule, objectives, and the date of the race.
Runna offers personalised training plans for every runner and every goal: Whether this is your first, 10th or 100th race, we'll help you get the most out of your training and smash your goals.
Check out our training plans to find the best running program for your goals!
More
Sport:
Running
Tags:
Nature
Altitude
Relay
This event listing is for informational purposes only. Runna is not affiliated with, endorsed by, or sponsored by Great Southern Endurance Run or Ultra Endurance. All event details are based on publicly available information and are provided solely to help users discover running events. Runna does not use any official logos, images, or proprietary content from this event or its organiser. Any trademarks or names mentioned are used descriptively to identify the event in a factual manner. For the most accurate and up to date information (including to register or purchase an entry to the event), please visit the Great Southern Endurance Run website.